Re: RFE: rpm2cpio should not need db3

[Jeff Johnson <jbj JBJ ORG>]

On Thu, Dec 27, 2001 at 06:43:46PM +0000, Edward Avis wrote:
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> When rpm gets into a real mess and you can't install any packages - not
> even to install a fixed version of rpm itself - then rpm2cpio can be a
> big help.  You can use rpm2cpio and cpio --extract to get some kind of
> working rpm setup on the machine.
> 
> I'd like to request that rpm2cpio be built _not_ linked against db3, so
> that if the db3 installation gets messed up somehow (as happened to me
> when rpm crashed while upgrading db3) you can still use it.

So use the attached shell script <shrug>

73 de Jeff
==============================================================================
#!/bin/sh

pkg=$1

leadsize=96
o=`expr $leadsize + 8`
set `od -j $o -N 8 -t u1 $pkg`
il=`expr 256 \* \( 256 \* \( 256 \* $2 + $3 \) + $4 \) + $5`
dl=`expr 256 \* \( 256 \* \( 256 \* $6 + $7 \) + $8 \) + $9`
# echo "sig il: $il dl: $dl"

sigsize=`expr 8 + 16 \* $il + $dl`
o=`expr $o + $sigsize + \( 8 - \( $sigsize \% 8 \) \% 8 \) + 8`
set `od -j $o -N 8 -t u1 $pkg`
il=`expr 256 \* \( 256 \* \( 256 \* $2 + $3 \) + $4 \) + $5`
dl=`expr 256 \* \( 256 \* \( 256 \* $6 + $7 \) + $8 \) + $9`
# echo "hdr il: $il dl: $dl"

hdrsize=`expr 8 + 16 \* $il + $dl`
o=`expr $o + $hdrsize`

dd if=$pkg ibs=1 skip=$o | gunzip

-- 
Jeff Johnson	ARS N3NPQ
jbj@jbj.org	(jbj@redhat.com)
Chapel Hill, NC